The report released Thursday shows little change for California, which is in a third-consecutive dry year. Severe to exceptional drought expanded to the entire state last week for the first time in the Drought Monitor's 15-year history.

Southern California Wildfires

In April, Gov. Jerry Brown issued a second executive order to help with the state's drought, an effort to help prevent wildfires and assist cities and farmers. The order came a month after he signed $687.4 million worth of legislation to assist drought-affected communities and provide funding to better use local water supplies.

A preliminary study released earlier this week by the University of California Davis said California's drought will cost the state's agricultural economy an estimated $1.7 billion this year and leave some 14,500 farmworkers without jobs. The study was done at the request of the California Department of Food and Agriculture and used computer models and recent water delivery figures to arrive at its conclusions, the Associated Press reported.

The report estimates 6 percent of farmland in the Central Valley -- or 410,000 acres -- could go unplanted because of cuts in water deliveries. A more detailed report is due out this summer.